Bethesda, Md.

Beau Biden, a Catholic who was former attorney general of Delaware and the oldest son of Vice President Joe Biden, died Saturday at Walter Reed National Military Medical Center in Bethesda of brain cancer. He was 46.

In a statement posted on the younger Biden's website, the family said: "It is with broken hearts that [we] announce the passing of our husband, brother and son, Beau, after he battled brain cancer with the same integrity, courage and strength he demonstrated every day of his life."

Nina Pham, a Dallas nurse who was the first person known to have contracted the Ebola virus in the United States, thanked God, her family and her medical team for her recovery Friday.

Pham held a news conference in Bethesda after she was declared virus-free and released from the National Institutes of Health Clinical Center.

"I feel fortunate and blessed to be standing here today. I would first and foremost like to thank God, my family and friends," she said. "Throughout this ordeal I have put my trust in God and my medical team.